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55 lines
1.8 KiB
Python
55 lines
1.8 KiB
Python
# Licensed to the Apache Software Foundation (ASF) under one
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The ASF licenses this file
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# to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance
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# with the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing,
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# software distributed under the License is distributed on an
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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# KIND, either express or implied. See the License for the
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# specific language governing permissions and limitations
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# under the License.
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"""migrate_treemap_chart
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Revision ID: 4c5da39be729
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Revises: 9ba2ce3086e5
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Create Date: 2023-06-08 10:22:23.192064
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"""
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from alembic import op
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from sqlalchemy.dialects.mysql.base import MySQLDialect
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from superset import db
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from superset.migrations.shared.migrate_viz import MigrateTreeMap
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# revision identifiers, used by Alembic.
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revision = "4c5da39be729"
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down_revision = "9ba2ce3086e5"
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def upgrade():
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bind = op.get_bind()
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# Ensure `slice.params` and `slice.query_context`` in MySQL is MEDIUMTEXT
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# before migration, as the migration will save a duplicate form_data backup
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# which may significantly increase the size of these fields.
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if isinstance(bind.dialect, MySQLDialect):
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# If the columns are already MEDIUMTEXT, this is a no-op
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op.execute("ALTER TABLE slices MODIFY params MEDIUMTEXT")
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op.execute("ALTER TABLE slices MODIFY query_context MEDIUMTEXT")
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session = db.Session(bind=bind)
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MigrateTreeMap.upgrade(session)
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def downgrade():
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bind = op.get_bind()
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session = db.Session(bind=bind)
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MigrateTreeMap.downgrade(session)
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